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- Si_3N_4 Grain Boundary Phase Studied by TEM and EDS Si_3N_4晶界相的电子显微镜和EDS能谱研究
- EFFECT OF GRAIN BOUNDARY PHASE ON TRANSMITTANCE OF TRANSLUCENT AIN CERAMICS 晶界相对半透明氮化铝陶瓷透过率的影响
- Varistor Ceramics of Composite Nanopowders: the Grain Boundary Phase Transformation and Stability 纳米复合粉体制备压敏陶瓷的晶界相变及稳定性
- grain boundary phase 晶界相
- The grain boundary secondary phase is an imporrant microstructure component in AIN ceram-ics,having significant effect on thermal conductivity. 晶界第二相是AIN陶瓷显微结构的重要组成部分,对AIN陶瓷的热导率有重大的影响。
- The deformation mechanism of AZ91D superplasticity is grain boundary sliding. 挤压态AZ91D镁合金超塑性变形的主要机制为晶界滑移机制。
- The different were interpreted by superplastic forming mechanism of silicon nitride ceramics. The existence of glass phase can be also proved in the grain boundary during superplastic deformation. 而高温断口上却几乎不存在这样的晶粒,这种不同可以用氮化硅陶瓷材料的超塑性变形机理来解释,也可以证明超塑性变形过程中晶界玻璃相的存在。
- The dominant process of superplastic deformation is fine grain boundary sliding, and an appropriately small amount of liquid phase can enhance the high strain rate superplasticity of the composite. 超塑性变形的主要机制是细小晶粒的晶界滑动,适当的微量液相有利于该复合材料的高应变速率超塑性。
- The effect of anisotropy of grain boundary energy on the kinetic of grain growth is simulated by phase field method,in which a time-dependent misorientation in grain boundary is introduced. 引入与时间有关的取向错配场变量,模拟了晶界能各向异性条件下晶粒长大的演化行为。模拟结果表明,与晶界能各向同性系统相比,随演化时间的延长,晶界能各向异性延迟晶粒的生长,使得晶粒的平均面积呈非线性变化;
- After adding element Al, Nd 2Fe 15 Al 2 phases segregate near to the grain boundary of the magnetic Nd 2Fe 14 B phase, which leads to the improvement of coercivity of magnets. 对于晶间添加Al元素的磁体 ,Al溶入晶间形成Nd2 Fe15Al2 相弥散地分布在晶界上 ,这有益于磁体矫顽力的提高 ;
- Impurities tend to segregate at grain boundaries. 杂质常常在晶粒间界偏析。
- And the energies of interdiffusion and grain boundary diffusion have been figured out by the Arrhenius equation. 从Arrhenius方程得出互扩散及晶界扩散激活能。
- The high life LCF cracks of DZ4 superalloy favorably initiate at the transverse segment of longitudinal grain boundary. 定向凝固DZ4合金高寿命低周疲劳裂纹易于萌生于试样内部或亚表面的柱状晶界.
- In the late stage of the deformation, with the grain size growing up, the grain boundary can emit partial dislocations. 在晶界处及附近有台阶界面结构, 以及与台阶形状相对应的应力场衬度。
- In addition, a grain boundary is formed at the coalescence boundary of neighboring growth fronts. 在相邻生长前沿所形成的合并界面处形成晶界;
- Photomicrograph of alloy overheating showes fraction grain boundary coarsening and melt-back delta at first. 其过烧特征最初表现为晶界局部加宽和复熔三角形的出现。
- Two area defects are twins and grain boundaries. 有两种面积缺陷,即孪生和晶粒间界。
- The results show that high pinning field could be obtained with appropriate thickness and magnetocrystalline anisotropy constant of cell boundary phase. 计算结果表明,只有合适的胞壁相厚度和磁晶各向异性常数才能获得高的钉扎场。
- As the continuous chain distribution in grain boundary of T6 state,fracture toughness and stress crossion resistance are low. T6工艺晶界为链状连续分布,断裂韧性和抗应力腐蚀性能较差;